Worcester GB162-65 Installation And Servicing Instruction page 10

KEY TO SYMBOLS AND SAFETY INSTRUCTIONS
• left side: 0 mm
• above: 40 mm.
In addition, sufficient space may be required to allow
lifting access to the wall mounting bracket. Wall-
mounted condensing gas system boilers must only be
used with Worcester flue gas systems, which are
certified with this type of boiler.
Observe the relevant standards, regulations and
legislation of the country or region of final use.
CAUTION: Use this device for its intended
purpose only.
DANGER:
Notes relating to the heating system water.
B Thoroughly clean and flush the system
before it is filled with water. Use only
unsoftened mains water with the correct
dosage of an approved water treatment
product such as Sentinel X100 to fill and
top up the system. For more information
about Sentinel call 0151 420 9563.
B When using water treatment, only
products suitable for use with Worcester
heat exchangers are permitted (e.g.
Sentinel X100). Your warranty is at risk if
an incorrect water treatment product is
used in conjunction with this appliance.
For more information, contact Worcester
Technical Product Support Department.
B It is most important that the correct
concentration of the water treatment
product is maintained in accordance with
the manufacturer's instructions.
B If the boiler is used in an existing system
any unsuitable additives MUST be
removed by thorough cleaning. BS 7593
details the steps necessary to clean a
central heating system.
B In hard water areas, treatment to prevent
lime scale may be necessary - however,
the use of artificially softened water is
NOT permitted.
B Under no circumstances should the
boiler be fired before the system has
been thoroughly flushed.
B Do not use artificially softened water.
B Only plastic pipework containing a
polymeric barrier should be used. Copper
pipework must be used for the first
600 mm.
10
Safe handling of substances:
No asbestos, mercury or CFCs are included in any part
of the boiler and its manufacture.
Potable water:
All seals, joints and compounds (including flux and
solder) and components used as part of the secondary
domestic water system must be approved by WRAS.
CH Water:
Artificially softened water must not be used to fill the
central heating system.
6 720 648 726 (2011/07)